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1.发明公开公开(公告)号：US20240243287A1
公开(公告)日：2024-07-18
申请号：US18236174
申请日：2023-08-21
发明人： Ten-Chin WEN , Tsung-Tien CHENG
CPC分类号： H01M4/62 , C08B3/16 , C08B37/003 , H01M4/366 , H01M4/386 , H01M4/485 , H01M4/587 , H01M2004/027
摘要： The present invention provides a negative electrode active material modified by zwitterionic polymer, which comprises a negative electrode active powder and a nano-scaled layer of zwitterionic polymer coated on the negative electrode active powder. Besides, the present invention also relates to the preparation method and applications of the above-mentioned negative electrode active material. The replacement of the negative electrode active material used in conventional cells with the negative electrode active material modified by zwitterionic polymer of the present invention benefits ion insertion and extraction, reduces irreversible reaction and prolongs cycle life of cells, thereby enhancing overall effectiveness of cells.
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2.发明公开公开(公告)号：US20230365719A1
公开(公告)日：2023-11-16
申请号：US18355047
申请日：2023-07-19
发明人： Akiko Miki , Taishi Kitaguchi , Akira Kitamura , Mitsuo Narita
摘要： There is provided a method for efficiently produce hydroxypropyl methyl cellulose acetate succinate (HPMCAS) having excellent flowability, where acetic acid in a reaction product mixture subjected to a wash and recovery step can be reduced. More specifically, there is provided a method for producing HPMCAS including an esterification step of esterifying hydroxypropyl methyl cellulose (HPMC) with acetic anhydride and succinic anhydride in acetic acid as a solvent to obtain a reaction product solution containing HPMCAS; a water addition step of adding water to the reaction product solution to obtain a water-added reaction product solution; an acetic acid removal step of removing at least a portion of both the solvent acetic acid and acetic acid derived from the acetic anhydride from the water-added reaction product solution to obtain a mixture having an acetic acid content reduced; and a wash and recovery step of washing the mixture and recovering the HPMCAS.
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公开(公告)号：US20230167201A1
公开(公告)日：2023-06-01
申请号：US18160009
申请日：2023-01-26
发明人： Casey Lynn Elkins , Robert Jacks Sharpe , Bin Wang
CPC分类号： C08B3/16 , C08B3/06 , C08B3/08 , C08J5/18 , C08J2301/10 , C08J2301/12 , C08J2301/14
摘要： The present application discloses regioselectively substituted cellulose esters, films made from the regioselectively substituted cellulose esters and methods for making the same. The regioselectively substituted cellulose esters are synthesized using trifluoroacetic anhydride and cellulose with various acyl donors or acyl donor precursors.
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公开(公告)号：US20230074167A1
公开(公告)日：2023-03-09
申请号：US17760452
申请日：2021-02-10
发明人： Qianqian Zhang , Charles Michael Buchanan , Casey Lynn Elkins , Wesley Wayne McConnell , Bin Wang , Robert Jacks Sharpe , Mustafa Humbel Ahmed
摘要： The present application discloses stretched films comprising regioselectively substituted cellulose esters and a component A: (I), (II), (III), or (IV), wherein A, B, C, R1, R2, R5, R6, R8, R9, m, n, and k are defined herein. The films exhibit negative birefringence and improved wavelength dispersion.
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公开(公告)号：US11505622B2
公开(公告)日：2022-11-22
申请号：US16492967
申请日：2018-03-28
发明人： Casey Lynn Elkins , Robert Jacks Sharpe , Bin Wang
摘要： The present application discloses regioselectively substituted cellulose esters, films made from the regioselectively substituted cellulose esters and methods for making the same. The regioselectively substituted cellulose esters are synthesized using trifluoroacetic anhydride and cellulose with various acyl donors or acyl donor precursors.
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公开(公告)号：US20220106410A1
公开(公告)日：2022-04-07
申请号：US17484405
申请日：2021-09-24
发明人： Akiko Miki , Taishi Kitaguchi , Akira Kitamura , Mitsuo Narita
摘要： There is provided a method for efficiently produce hydroxypropyl methyl cellulose acetate succinate (HPMCAS) having excellent flowability, where acetic acid in a reaction product mixture subjected to a wash and recovery step can be reduced. More specifically, there is provided a method for producing HPMCAS including an esterification step of esterifying hydroxypropyl methyl cellulose (HPMC) with acetic anhydride and succinic anhydride in acetic acid as a solvent to obtain a reaction product solution containing HPMCAS; a water addition step of adding water to the reaction product solution to obtain a water-added reaction product solution; an acetic acid removal step of removing at least a portion of both the solvent acetic acid and acetic acid derived from the acetic anhydride from the water-added reaction product solution to obtain a mixture having an acetic acid content reduced; and a wash and recovery step of washing the mixture and recovering the HPMCAS.
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公开(公告)号：US11161917B2
公开(公告)日：2021-11-02
申请号：US16159962
申请日：2018-10-15
申请人： NEC Corporation
发明人： Shukichi Tanaka , Kiyohiko Toyama , Masatoshi Iji
摘要： A method for producing a cellulose derivative, including reacting a mixed acid anhydride having two particular types of acyl groups with cellulose in the presence of a base catalyst in an organic solvent having an electron pair-donating property to form a cellulose derivative with the two types of acyl groups derived from the mixed acid anhydride, the acyl groups being introduced at hydroxy groups in the cellulose.
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公开(公告)号：US11034776B2
公开(公告)日：2021-06-15
申请号：US16831904
申请日：2020-03-27
发明人： Matthew Allen Boone , Christopher Harlan Burk , Peter Borden Mackenzie , Jennifer A. Fish , Eduardo Gallas Cervo , Elaine Beatrice Mackenzie , Robert Joseph Maleski , Wesley McConnell , David William Norman , Tabatha Stearns , Bin Wang
IPC分类号： C08B3/16 , B32B27/24 , B32B27/08 , B32B27/36 , B32B7/12 , B32B27/28 , C08L1/14 , B32B23/08 , B32B27/32 , B32B27/18 , G02B5/30 , B32B27/22 , B32B27/06 , G02F1/13363 , H01L51/52 , C08L1/08 , C08L1/10
摘要： Regioselectively substituted cellulose esters having a plurality of pivaloyl substituents and a plurality of aryl-acyl substituents are disclosed along with methods for making the same. Such cellulose esters may be suitable for use in films, such as +A optical films, and/or +C optical films. Optical films prepared employing such cellulose esters have a variety of commercial applications, such as, for example, as compensation films in liquid crystal displays and/or waveplates in creating circular polarized light used in 3-D technology.
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公开(公告)号：US11028186B2
公开(公告)日：2021-06-08
申请号：US16309989
申请日：2017-06-15
申请人： NEC CORPORATION
摘要： A cellulose derivative obtained by substituting at least part of hydrogen atoms of hydroxy groups of a cellulose with an acyl group having 2 to 4 carbon atoms, a long-chain organic group having 7 or more carbon atoms and a high refractive-index organic group.
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公开(公告)号：US20200055960A1
公开(公告)日：2020-02-20
申请号：US16665290
申请日：2019-10-28
发明人： Charles Michael Buchanan , Michael Eugene Donelson , Elizabeth Guzman-Morales , Peter Borden Mackenzie , Bin Wang
摘要： Regioselectively substituted cellulose esters having a plurality of aryl-acyl substituents and a plurality of alkyl-acyl substituents are disclosed along with methods for making the same. Such cellulose esters may be suitable for use in optical films, such as optical films having certain Nz values, −A optical films, and/or +C optical films. Optical films prepared employing such cellulose esters have a variety of commercial applications, such as, for example, as compensation films in liquid crystal displays and/or waveplates in creating circular polarized light used in 3-D technology.
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